Invalid fifo order 2 equal entries from same class after inital load

Fast initial load and afterward transaction that lock fifo objects in parallel blocking operation for same fifo objects will cause commit of the transaction fail with:
Caused by: java.lang.RuntimeException: invalid fifo order 2 equal entries from same class uid1=397232699^14^2^0^0 uid2=397232699^14^1^0^0
at com.j_spaces.core.FifoEntriesComparator.compare(FifoEntriesComparator.java:45)
at com.j_spaces.core.FifoEntriesComparator.compare(FifoEntriesComparator.java:34)
at java.util.TreeMap.put(TreeMap.java:552)
at com.j_spaces.core.server.processor.Processor.handleLockedFifoEntriesOnXtnEnd(Processor.java:1662)
at com.gigaspaces.internal.server.space.SpaceEngine.prepare(SpaceEngine.java:3196)
at com.gigaspaces.internal.server.space.SpaceEngine.prepareAndCommit(SpaceEngine.java:3267)
at com.gigaspaces.internal.server.space.SpaceImpl.prepareAndCommitImpl(SpaceImpl.java:2434)
at com.gigaspaces.internal.server.space.operations.PrepareAndCommitTransactionSpaceOperation.execute(PrepareAndCommitTransactionSpaceOperation.java:34)
at com.gigaspaces.internal.server.space.operations.PrepareAndCommitTransactionSpaceOperation.execute(PrepareAndCommitTransactionSpaceOperation.java:27)
at com.gigaspaces.internal.server.space.operations.SpaceOperationsExecutor.executeOperation(SpaceOperationsExecutor.java:83)
at com.gigaspaces.internal.server.space.SpaceImpl.executeOperation(SpaceImpl.java:1806)
at com.gigaspaces.internal.remoting.RemoteOperationsExecutorGigaspacesMethodinternalInvoke2.internalInvoke(Unknown Source)
at com.gigaspaces.internal.reflection.fast.AbstractMethod.invoke(AbstractMethod.java:45)
at com.gigaspaces.lrmi.LRMIRuntime.invoked(LRMIRuntime.java:441)
at com.gigaspaces.lrmi.nio.Pivot.consumeAndHandleRequest(Pivot.java:494)
at com.gigaspaces.lrmi.nio.Pivot.handleRequest(Pivot.java:572)
at com.gigaspaces.lrmi.nio.Pivot$ChannelEntryTask.run(Pivot.java:173)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)